n=30=self-2=n3=ne4=w6=e7=sw8=s的一些解(倒数方向总计10)
.00.00.00...00.78.78...68.46.47...68.46.48...00.67.48...00.78.00...00.67.47
.00.67.47...38.23.28...28.36.47...28.68.24...38.67.24...38.28.00...38.37.00
.36.34.00...26.46.24...26.34.00...26.24.00...23.00.00...26.24.00...23.00.00
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